would anyone please help me how the new economy rules work because I've stumbled on a problem. As I've said in "general talk", the new economy rules make no sense regarding tax to me. Since no body provided any feedback at all, as if the community is concerned with the number of planets being managed by a single person, like that really matters at all, and after that concerns about HP and such, I feel pressed to seek understanding here.

So, what I find, really simply put, with good planetary stats a hotel, for example, with 0% Tax Level, would make 42k. If we raise the tax level by 15%, the income provided by the hotel drops to 33k. This is 9k less. The Tax you receive from the hotel is 33k*15%=more or less 5k? Which means that with tax actually we receive 4k less in total income (tax+FI).

Yeah, I'm cool with the less money part. But there's no point in Tax if it is based over Facility Income, since Facility Income generates far more money without Tax. So, there's no need to use tax, because you make more money without it. At least to that conclusion I've come. So, there must be something I'm not getting right...

Fleur is (and the rules are) technically correct. If you make 100m in FI right now with your TL currently set to 5%, then you will get 105m total. However Athanas seems to be correct in that raising TL above current levels will have negative effects on FI/TI.

Yes, with the way the FI equations run, increasing tax decreases the amount of IF you get. In addition, although the tax is in addition to the FI you get, the loss of FI from the increased tax is more than the extra money you get from the taxes. This means that currently, it is much better to run at 0% tax if you control the planet and all the FI there. If you have other peoples FI on your planet, then yes a tax rate may be useful for you as planet owner.

Makes perfect sense in a strange way. If the government owns everything, then taxes are redundant. If the planet is a little more laissez faire, then it makes sense for the government to tax property owned by those other than the state.